From: Florin Coras <fcoras@cisco.com>
Date: Thu, 8 Aug 2019 19:57:48 +0000 (-0700)
Subject: svm: fix fifo max writeable chunk computation
X-Git-Tag: v20.05-rc0~1027
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F57%2F21157%2F2;p=vpp.git

svm: fix fifo max writeable chunk computation

Type:fix

Change-Id: I60fdd7651a3d3fac505e7aec7a41f9d096022895
Signed-off-by: Florin Coras <fcoras@cisco.com>
---

diff --git a/src/svm/svm_fifo.h b/src/svm/svm_fifo.h
index d5dfc9c4aa3..64ed53bf827 100644
--- a/src/svm/svm_fifo.h
+++ b/src/svm/svm_fifo.h
@@ -650,7 +650,7 @@ svm_fifo_max_write_chunk (svm_fifo_t * f)
 {
   u32 head, tail;
   f_load_head_tail_prod (f, &head, &tail);
-  return tail > head ? f->size - tail : f_free_count (f, head, tail);
+  return tail >= head ? f->size - tail : f_free_count (f, head, tail);
 }
 
 static inline u8 *